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Finding the Fourth Proportional to 85,575.71, 118,055.19 and 55,370.87

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Solution

The fourth proportional to 85,575.71, 118,055.19 and 55,370.87 is: 76,386.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,575.71 : 118,055.19 = 55,370.87 : x
  2. Step 2: Convert to fraction form
    85,575.71/118,055.19 = 55,370.87/x
  3. Step 3: Cross multiply
    85,575.71x = 118,055.19 × 55,370.87
  4. Step 4: Simplify right side
    85,575.71x = 6,536,818,578.32
  5. Step 5: Solve for x
    x = 6,536,818,578.32/85,575.71
  6. Step 6: Final answer
    x = 76,386.38

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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.