Home / 42,970.92-64,459.49-17,985.84

Finding the Fourth Proportional to 42,970.92, 64,459.49 and 17,985.84

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Solution

The fourth proportional to 42,970.92, 64,459.49 and 17,985.84 is: 26,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,970.92 : 64,459.49 = 17,985.84 : x
  2. Step 2: Convert to fraction form
    42,970.92/64,459.49 = 17,985.84/x
  3. Step 3: Cross multiply
    42,970.92x = 64,459.49 × 17,985.84
  4. Step 4: Simplify right side
    42,970.92x = 1,159,358,073.62
  5. Step 5: Solve for x
    x = 1,159,358,073.62/42,970.92
  6. Step 6: Final answer
    x = 26,980.06

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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.