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Finding the Fourth Proportional to 90,258.63, 124,570.71 and 56,272.65

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Solution

The fourth proportional to 90,258.63, 124,570.71 and 56,272.65 is: 77,664.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,258.63 : 124,570.71 = 56,272.65 : x
  2. Step 2: Convert to fraction form
    90,258.63/124,570.71 = 56,272.65/x
  3. Step 3: Cross multiply
    90,258.63x = 124,570.71 × 56,272.65
  4. Step 4: Simplify right side
    90,258.63x = 7,009,923,964.08
  5. Step 5: Solve for x
    x = 7,009,923,964.08/90,258.63
  6. Step 6: Final answer
    x = 77,664.86

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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.