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Finding the Fourth Proportional to 70,730.60, 97,606.28 and 38,899.50

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Solution

The fourth proportional to 70,730.60, 97,606.28 and 38,899.50 is: 53,680.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,730.60 : 97,606.28 = 38,899.50 : x
  2. Step 2: Convert to fraction form
    70,730.60/97,606.28 = 38,899.50/x
  3. Step 3: Cross multiply
    70,730.60x = 97,606.28 × 38,899.50
  4. Step 4: Simplify right side
    70,730.60x = 3,796,835,488.86
  5. Step 5: Solve for x
    x = 3,796,835,488.86/70,730.60
  6. Step 6: Final answer
    x = 53,680.24

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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.