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Finding the Fourth Proportional to 60,034.72, 90,106.35 and 31,978.21

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Solution

The fourth proportional to 60,034.72, 90,106.35 and 31,978.21 is: 47,996.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,034.72 : 90,106.35 = 31,978.21 : x
  2. Step 2: Convert to fraction form
    60,034.72/90,106.35 = 31,978.21/x
  3. Step 3: Cross multiply
    60,034.72x = 90,106.35 × 31,978.21
  4. Step 4: Simplify right side
    60,034.72x = 2,881,439,782.63
  5. Step 5: Solve for x
    x = 2,881,439,782.63/60,034.72
  6. Step 6: Final answer
    x = 47,996.22

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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.