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Finding the Fourth Proportional to 64,999.99, 89,700.59 and 38,142.95

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Solution

The fourth proportional to 64,999.99, 89,700.59 and 38,142.95 is: 52,637.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,999.99 : 89,700.59 = 38,142.95 : x
  2. Step 2: Convert to fraction form
    64,999.99/89,700.59 = 38,142.95/x
  3. Step 3: Cross multiply
    64,999.99x = 89,700.59 × 38,142.95
  4. Step 4: Simplify right side
    64,999.99x = 3,421,445,119.34
  5. Step 5: Solve for x
    x = 3,421,445,119.34/64,999.99
  6. Step 6: Final answer
    x = 52,637.63

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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.