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Finding the Fourth Proportional to 90,170.66, 124,444.80 and 51,931.46

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Solution

The fourth proportional to 90,170.66, 124,444.80 and 51,931.46 is: 71,670.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,170.66 : 124,444.80 = 51,931.46 : x
  2. Step 2: Convert to fraction form
    90,170.66/124,444.80 = 51,931.46/x
  3. Step 3: Cross multiply
    90,170.66x = 124,444.80 × 51,931.46
  4. Step 4: Simplify right side
    90,170.66x = 6,462,600,153.41
  5. Step 5: Solve for x
    x = 6,462,600,153.41/90,170.66
  6. Step 6: Final answer
    x = 71,670.76

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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.