Home / 90,089.40-124,356.78-54,281.40

Finding the Fourth Proportional to 90,089.40, 124,356.78 and 54,281.40

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Solution

The fourth proportional to 90,089.40, 124,356.78 and 54,281.40 is: 74,928.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,089.40 : 124,356.78 = 54,281.40 : x
  2. Step 2: Convert to fraction form
    90,089.40/124,356.78 = 54,281.40/x
  3. Step 3: Cross multiply
    90,089.40x = 124,356.78 × 54,281.40
  4. Step 4: Simplify right side
    90,089.40x = 6,750,260,117.89
  5. Step 5: Solve for x
    x = 6,750,260,117.89/90,089.40
  6. Step 6: Final answer
    x = 74,928.46

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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.