Home / 90,459.49-124,689.93-71,308.06

Finding the Fourth Proportional to 90,459.49, 124,689.93 and 71,308.06

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Solution

The fourth proportional to 90,459.49, 124,689.93 and 71,308.06 is: 98,291.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,459.49 : 124,689.93 = 71,308.06 : x
  2. Step 2: Convert to fraction form
    90,459.49/124,689.93 = 71,308.06/x
  3. Step 3: Cross multiply
    90,459.49x = 124,689.93 × 71,308.06
  4. Step 4: Simplify right side
    90,459.49x = 8,891,397,009.84
  5. Step 5: Solve for x
    x = 8,891,397,009.84/90,459.49
  6. Step 6: Final answer
    x = 98,291.48

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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.