Home / 105,291.16-145,302.06-57,545.08

Finding the Fourth Proportional to 105,291.16, 145,302.06 and 57,545.08

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Solution

The fourth proportional to 105,291.16, 145,302.06 and 57,545.08 is: 79,412.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,291.16 : 145,302.06 = 57,545.08 : x
  2. Step 2: Convert to fraction form
    105,291.16/145,302.06 = 57,545.08/x
  3. Step 3: Cross multiply
    105,291.16x = 145,302.06 × 57,545.08
  4. Step 4: Simplify right side
    105,291.16x = 8,361,418,666.86
  5. Step 5: Solve for x
    x = 8,361,418,666.86/105,291.16
  6. Step 6: Final answer
    x = 79,412.35

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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.