Home / 85,553,002.40-128,329,503.60-42,428,861.60

Finding the Fourth Proportional to 85,553,002.40, 128,329,503.60 and 42,428,861.60

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Solution

The fourth proportional to 85,553,002.40, 128,329,503.60 and 42,428,861.60 is: 63,643,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,553,002.40 : 128,329,503.60 = 42,428,861.60 : x
  2. Step 2: Convert to fraction form
    85,553,002.40/128,329,503.60 = 42,428,861.60/x
  3. Step 3: Cross multiply
    85,553,002.40x = 128,329,503.60 × 42,428,861.60
  4. Step 4: Simplify right side
    85,553,002.40x = 5,444,874,747,441,102
  5. Step 5: Solve for x
    x = 5,444,874,747,441,102/85,553,002.40
  6. Step 6: Final answer
    x = 63,643,292.40

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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.