Home / 77,485,876.40-106,930,505.76-42,678,567.92

Finding the Fourth Proportional to 77,485,876.40, 106,930,505.76 and 42,678,567.92

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Solution

The fourth proportional to 77,485,876.40, 106,930,505.76 and 42,678,567.92 is: 58,896,421.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,485,876.40 : 106,930,505.76 = 42,678,567.92 : x
  2. Step 2: Convert to fraction form
    77,485,876.40/106,930,505.76 = 42,678,567.92/x
  3. Step 3: Cross multiply
    77,485,876.40x = 106,930,505.76 × 42,678,567.92
  4. Step 4: Simplify right side
    77,485,876.40x = 4,563,640,852,798,112
  5. Step 5: Solve for x
    x = 4,563,640,852,798,112/77,485,876.40
  6. Step 6: Final answer
    x = 58,896,421.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.