Home / 90,070.76-124,289.56-51,820.16

Finding the Fourth Proportional to 90,070.76, 124,289.56 and 51,820.16

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Solution

The fourth proportional to 90,070.76, 124,289.56 and 51,820.16 is: 71,507.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,070.76 : 124,289.56 = 51,820.16 : x
  2. Step 2: Convert to fraction form
    90,070.76/124,289.56 = 51,820.16/x
  3. Step 3: Cross multiply
    90,070.76x = 124,289.56 × 51,820.16
  4. Step 4: Simplify right side
    90,070.76x = 6,440,704,885.53
  5. Step 5: Solve for x
    x = 6,440,704,885.53/90,070.76
  6. Step 6: Final answer
    x = 71,507.17

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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.