Home / 85,212,545.40-127,818,818.10-54,601,543.80

Finding the Fourth Proportional to 85,212,545.40, 127,818,818.10 and 54,601,543.80

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Solution

The fourth proportional to 85,212,545.40, 127,818,818.10 and 54,601,543.80 is: 81,902,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,212,545.40 : 127,818,818.10 = 54,601,543.80 : x
  2. Step 2: Convert to fraction form
    85,212,545.40/127,818,818.10 = 54,601,543.80/x
  3. Step 3: Cross multiply
    85,212,545.40x = 127,818,818.10 × 54,601,543.80
  4. Step 4: Simplify right side
    85,212,545.40x = 6,979,104,794,951,382
  5. Step 5: Solve for x
    x = 6,979,104,794,951,382/85,212,545.40
  6. Step 6: Final answer
    x = 81,902,315.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.