Home / 81,788,981.22-112,866,977.61-45,119,542.50

Finding the Fourth Proportional to 81,788,981.22, 112,866,977.61 and 45,119,542.50

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Solution

The fourth proportional to 81,788,981.22, 112,866,977.61 and 45,119,542.50 is: 62,263,966.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,788,981.22 : 112,866,977.61 = 45,119,542.50 : x
  2. Step 2: Convert to fraction form
    81,788,981.22/112,866,977.61 = 45,119,542.50/x
  3. Step 3: Cross multiply
    81,788,981.22x = 112,866,977.61 × 45,119,542.50
  4. Step 4: Simplify right side
    81,788,981.22x = 5,092,506,393,120,943
  5. Step 5: Solve for x
    x = 5,092,506,393,120,943/81,788,981.22
  6. Step 6: Final answer
    x = 62,263,966.58

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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.