Home / 47,058.40-64,944-31,115.20

Finding the Fourth Proportional to 47,058.40, 64,944 and 31,115.20

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Solution

The fourth proportional to 47,058.40, 64,944 and 31,115.20 is: 42,941.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,058.40 : 64,944 = 31,115.20 : x
  2. Step 2: Convert to fraction form
    47,058.40/64,944 = 31,115.20/x
  3. Step 3: Cross multiply
    47,058.40x = 64,944 × 31,115.20
  4. Step 4: Simplify right side
    47,058.40x = 2,020,745,548.80
  5. Step 5: Solve for x
    x = 2,020,745,548.80/47,058.40
  6. Step 6: Final answer
    x = 42,941.23

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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.