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Finding the Fourth Proportional to 85,813.80, 128,547.90 and 59,548.20

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Solution

The fourth proportional to 85,813.80, 128,547.90 and 59,548.20 is: 89,202.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,813.80 : 128,547.90 = 59,548.20 : x
  2. Step 2: Convert to fraction form
    85,813.80/128,547.90 = 59,548.20/x
  3. Step 3: Cross multiply
    85,813.80x = 128,547.90 × 59,548.20
  4. Step 4: Simplify right side
    85,813.80x = 7,654,796,058.78
  5. Step 5: Solve for x
    x = 7,654,796,058.78/85,813.80
  6. Step 6: Final answer
    x = 89,202.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.