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Finding the Fourth Proportional to 65,995.68, 90,985.93 and 52,428.74

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Solution

The fourth proportional to 65,995.68, 90,985.93 and 52,428.74 is: 72,281.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,995.68 : 90,985.93 = 52,428.74 : x
  2. Step 2: Convert to fraction form
    65,995.68/90,985.93 = 52,428.74/x
  3. Step 3: Cross multiply
    65,995.68x = 90,985.93 × 52,428.74
  4. Step 4: Simplify right side
    65,995.68x = 4,770,277,278.23
  5. Step 5: Solve for x
    x = 4,770,277,278.23/65,995.68
  6. Step 6: Final answer
    x = 72,281.66

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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.