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Finding the Fourth Proportional to 92,752.60, 139,205.70 and 42,909.40

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Solution

The fourth proportional to 92,752.60, 139,205.70 and 42,909.40 is: 64,399.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,752.60 : 139,205.70 = 42,909.40 : x
  2. Step 2: Convert to fraction form
    92,752.60/139,205.70 = 42,909.40/x
  3. Step 3: Cross multiply
    92,752.60x = 139,205.70 × 42,909.40
  4. Step 4: Simplify right side
    92,752.60x = 5,973,233,063.58
  5. Step 5: Solve for x
    x = 5,973,233,063.58/92,752.60
  6. Step 6: Final answer
    x = 64,399.63

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1.5x scale

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.