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Finding the Fourth Proportional to 60,970.29, 91,432.44 and 20,977.95

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Solution

The fourth proportional to 60,970.29, 91,432.44 and 20,977.95 is: 31,459.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,970.29 : 91,432.44 = 20,977.95 : x
  2. Step 2: Convert to fraction form
    60,970.29/91,432.44 = 20,977.95/x
  3. Step 3: Cross multiply
    60,970.29x = 91,432.44 × 20,977.95
  4. Step 4: Simplify right side
    60,970.29x = 1,918,065,154.70
  5. Step 5: Solve for x
    x = 1,918,065,154.70/60,970.29
  6. Step 6: Final answer
    x = 31,459.01

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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.