Home / 90,875.46-125,457.34-63,734.88

Finding the Fourth Proportional to 90,875.46, 125,457.34 and 63,734.88

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Solution

The fourth proportional to 90,875.46, 125,457.34 and 63,734.88 is: 87,988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,875.46 : 125,457.34 = 63,734.88 : x
  2. Step 2: Convert to fraction form
    90,875.46/125,457.34 = 63,734.88/x
  3. Step 3: Cross multiply
    90,875.46x = 125,457.34 × 63,734.88
  4. Step 4: Simplify right side
    90,875.46x = 7,996,008,510.02
  5. Step 5: Solve for x
    x = 7,996,008,510.02/90,875.46
  6. Step 6: Final answer
    x = 87,988.64

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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.