Home / 85,515.96-118,045.02-76,547.64

Finding the Fourth Proportional to 85,515.96, 118,045.02 and 76,547.64

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Solution

The fourth proportional to 85,515.96, 118,045.02 and 76,547.64 is: 105,665.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,515.96 : 118,045.02 = 76,547.64 : x
  2. Step 2: Convert to fraction form
    85,515.96/118,045.02 = 76,547.64/x
  3. Step 3: Cross multiply
    85,515.96x = 118,045.02 × 76,547.64
  4. Step 4: Simplify right side
    85,515.96x = 9,036,067,694.75
  5. Step 5: Solve for x
    x = 9,036,067,694.75/85,515.96
  6. Step 6: Final answer
    x = 105,665.28

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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.