Home / 74,412.06-102,688.71-40,878.06

Finding the Fourth Proportional to 74,412.06, 102,688.71 and 40,878.06

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Solution

The fourth proportional to 74,412.06, 102,688.71 and 40,878.06 is: 56,411.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,412.06 : 102,688.71 = 40,878.06 : x
  2. Step 2: Convert to fraction form
    74,412.06/102,688.71 = 40,878.06/x
  3. Step 3: Cross multiply
    74,412.06x = 102,688.71 × 40,878.06
  4. Step 4: Simplify right side
    74,412.06x = 4,197,715,248.70
  5. Step 5: Solve for x
    x = 4,197,715,248.70/74,412.06
  6. Step 6: Final answer
    x = 56,411.76

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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.