Home / 85,515.49-118,044.30-76,547.17

Finding the Fourth Proportional to 85,515.49, 118,044.30 and 76,547.17

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Solution

The fourth proportional to 85,515.49, 118,044.30 and 76,547.17 is: 105,664.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,515.49 : 118,044.30 = 76,547.17 : x
  2. Step 2: Convert to fraction form
    85,515.49/118,044.30 = 76,547.17/x
  3. Step 3: Cross multiply
    85,515.49x = 118,044.30 × 76,547.17
  4. Step 4: Simplify right side
    85,515.49x = 9,035,957,099.63
  5. Step 5: Solve for x
    x = 9,035,957,099.63/85,515.49
  6. Step 6: Final answer
    x = 105,664.57

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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.