Home / 90,497.30-124,771.47-64,686.74

Finding the Fourth Proportional to 90,497.30, 124,771.47 and 64,686.74

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Solution

The fourth proportional to 90,497.30, 124,771.47 and 64,686.74 is: 89,185.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,497.30 : 124,771.47 = 64,686.74 : x
  2. Step 2: Convert to fraction form
    90,497.30/124,771.47 = 64,686.74/x
  3. Step 3: Cross multiply
    90,497.30x = 124,771.47 × 64,686.74
  4. Step 4: Simplify right side
    90,497.30x = 8,071,059,639.31
  5. Step 5: Solve for x
    x = 8,071,059,639.31/90,497.30
  6. Step 6: Final answer
    x = 89,185.64

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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.