Home / 42,784.47-64,176.48-11,619.72

Finding the Fourth Proportional to 42,784.47, 64,176.48 and 11,619.72

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Solution

The fourth proportional to 42,784.47, 64,176.48 and 11,619.72 is: 17,429.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,784.47 : 64,176.48 = 11,619.72 : x
  2. Step 2: Convert to fraction form
    42,784.47/64,176.48 = 11,619.72/x
  3. Step 3: Cross multiply
    42,784.47x = 64,176.48 × 11,619.72
  4. Step 4: Simplify right side
    42,784.47x = 745,712,728.19
  5. Step 5: Solve for x
    x = 745,712,728.19/42,784.47
  6. Step 6: Final answer
    x = 17,429.52

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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.