Home / 85,248,026.60-127,872,039.90-77,437,812.20

Finding the Fourth Proportional to 85,248,026.60, 127,872,039.90 and 77,437,812.20

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Solution

The fourth proportional to 85,248,026.60, 127,872,039.90 and 77,437,812.20 is: 116,156,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,248,026.60 : 127,872,039.90 = 77,437,812.20 : x
  2. Step 2: Convert to fraction form
    85,248,026.60/127,872,039.90 = 77,437,812.20/x
  3. Step 3: Cross multiply
    85,248,026.60x = 127,872,039.90 × 77,437,812.20
  4. Step 4: Simplify right side
    85,248,026.60x = 9,902,131,011,407,108
  5. Step 5: Solve for x
    x = 9,902,131,011,407,108/85,248,026.60
  6. Step 6: Final answer
    x = 116,156,718.30

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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.