Home / 47,931,415.80-71,897,123.70-40,278,665.40

Finding the Fourth Proportional to 47,931,415.80, 71,897,123.70 and 40,278,665.40

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Solution

The fourth proportional to 47,931,415.80, 71,897,123.70 and 40,278,665.40 is: 60,417,998.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,931,415.80 : 71,897,123.70 = 40,278,665.40 : x
  2. Step 2: Convert to fraction form
    47,931,415.80/71,897,123.70 = 40,278,665.40/x
  3. Step 3: Cross multiply
    47,931,415.80x = 71,897,123.70 × 40,278,665.40
  4. Step 4: Simplify right side
    47,931,415.80x = 2,895,920,188,734,710
  5. Step 5: Solve for x
    x = 2,895,920,188,734,710/47,931,415.80
  6. Step 6: Final answer
    x = 60,417,998.10

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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.