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Finding the Fourth Proportional to 64,686.72, 97,012.80 and 29,642.88

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Solution

The fourth proportional to 64,686.72, 97,012.80 and 29,642.88 is: 44,456.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,686.72 : 97,012.80 = 29,642.88 : x
  2. Step 2: Convert to fraction form
    64,686.72/97,012.80 = 29,642.88/x
  3. Step 3: Cross multiply
    64,686.72x = 97,012.80 × 29,642.88
  4. Step 4: Simplify right side
    64,686.72x = 2,875,738,788.86
  5. Step 5: Solve for x
    x = 2,875,738,788.86/64,686.72
  6. Step 6: Final answer
    x = 44,456.40

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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.