Home / 74,421.18-102,700.82-40,429.40

Finding the Fourth Proportional to 74,421.18, 102,700.82 and 40,429.40

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Solution

The fourth proportional to 74,421.18, 102,700.82 and 40,429.40 is: 55,792.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,421.18 : 102,700.82 = 40,429.40 : x
  2. Step 2: Convert to fraction form
    74,421.18/102,700.82 = 40,429.40/x
  3. Step 3: Cross multiply
    74,421.18x = 102,700.82 × 40,429.40
  4. Step 4: Simplify right side
    74,421.18x = 4,152,132,532.11
  5. Step 5: Solve for x
    x = 4,152,132,532.11/74,421.18
  6. Step 6: Final answer
    x = 55,792.35

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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.