Home / 74,312.50-102,551.25-40,780.66

Finding the Fourth Proportional to 74,312.50, 102,551.25 and 40,780.66

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Solution

The fourth proportional to 74,312.50, 102,551.25 and 40,780.66 is: 56,277.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,312.50 : 102,551.25 = 40,780.66 : x
  2. Step 2: Convert to fraction form
    74,312.50/102,551.25 = 40,780.66/x
  3. Step 3: Cross multiply
    74,312.50x = 102,551.25 × 40,780.66
  4. Step 4: Simplify right side
    74,312.50x = 4,182,107,658.83
  5. Step 5: Solve for x
    x = 4,182,107,658.83/74,312.50
  6. Step 6: Final answer
    x = 56,277.31

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1.5x scale

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.