Home / 85,248,019.60-127,872,029.40-77,437,805.20

Finding the Fourth Proportional to 85,248,019.60, 127,872,029.40 and 77,437,805.20

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Solution

The fourth proportional to 85,248,019.60, 127,872,029.40 and 77,437,805.20 is: 116,156,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,248,019.60 : 127,872,029.40 = 77,437,805.20 : x
  2. Step 2: Convert to fraction form
    85,248,019.60/127,872,029.40 = 77,437,805.20/x
  3. Step 3: Cross multiply
    85,248,019.60x = 127,872,029.40 × 77,437,805.20
  4. Step 4: Simplify right side
    85,248,019.60x = 9,902,129,303,205,874
  5. Step 5: Solve for x
    x = 9,902,129,303,205,874/85,248,019.60
  6. Step 6: Final answer
    x = 116,156,707.80

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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.