Home / 103,680.51-155,513.46-40,488.76

Finding the Fourth Proportional to 103,680.51, 155,513.46 and 40,488.76

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Solution

The fourth proportional to 103,680.51, 155,513.46 and 40,488.76 is: 60,730.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680.51 : 155,513.46 = 40,488.76 : x
  2. Step 2: Convert to fraction form
    103,680.51/155,513.46 = 40,488.76/x
  3. Step 3: Cross multiply
    103,680.51x = 155,513.46 × 40,488.76
  4. Step 4: Simplify right side
    103,680.51x = 6,296,547,158.71
  5. Step 5: Solve for x
    x = 6,296,547,158.71/103,680.51
  6. Step 6: Final answer
    x = 60,730.29

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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.