Home / 74,543.23-102,869.62-42,730.57

Finding the Fourth Proportional to 74,543.23, 102,869.62 and 42,730.57

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Solution

The fourth proportional to 74,543.23, 102,869.62 and 42,730.57 is: 58,968.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,543.23 : 102,869.62 = 42,730.57 : x
  2. Step 2: Convert to fraction form
    74,543.23/102,869.62 = 42,730.57/x
  3. Step 3: Cross multiply
    74,543.23x = 102,869.62 × 42,730.57
  4. Step 4: Simplify right side
    74,543.23x = 4,395,677,498.28
  5. Step 5: Solve for x
    x = 4,395,677,498.28/74,543.23
  6. Step 6: Final answer
    x = 58,968.17

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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.