Home / 72,768,386.55-100,418,838.91-39,727,038.83

Finding the Fourth Proportional to 72,768,386.55, 100,418,838.91 and 39,727,038.83

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Solution

The fourth proportional to 72,768,386.55, 100,418,838.91 and 39,727,038.83 is: 54,822,475.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,768,386.55 : 100,418,838.91 = 39,727,038.83 : x
  2. Step 2: Convert to fraction form
    72,768,386.55/100,418,838.91 = 39,727,038.83/x
  3. Step 3: Cross multiply
    72,768,386.55x = 100,418,838.91 × 39,727,038.83
  4. Step 4: Simplify right side
    72,768,386.55x = 3,989,343,112,641,084.50
  5. Step 5: Solve for x
    x = 3,989,343,112,641,084.50/72,768,386.55
  6. Step 6: Final answer
    x = 54,822,475.83

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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.