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Finding the Fourth Proportional to 38,987, 53,798.79 and 23,068.66

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Solution

The fourth proportional to 38,987, 53,798.79 and 23,068.66 is: 31,832.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,987 : 53,798.79 = 23,068.66 : x
  2. Step 2: Convert to fraction form
    38,987/53,798.79 = 23,068.66/x
  3. Step 3: Cross multiply
    38,987x = 53,798.79 × 23,068.66
  4. Step 4: Simplify right side
    38,987x = 1,241,065,994.92
  5. Step 5: Solve for x
    x = 1,241,065,994.92/38,987
  6. Step 6: Final answer
    x = 31,832.82

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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.