Home / 56,811.11-78,541.04-42,639.35

Finding the Fourth Proportional to 56,811.11, 78,541.04 and 42,639.35

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Solution

The fourth proportional to 56,811.11, 78,541.04 and 42,639.35 is: 58,948.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,811.11 : 78,541.04 = 42,639.35 : x
  2. Step 2: Convert to fraction form
    56,811.11/78,541.04 = 42,639.35/x
  3. Step 3: Cross multiply
    56,811.11x = 78,541.04 × 42,639.35
  4. Step 4: Simplify right side
    56,811.11x = 3,348,938,607.82
  5. Step 5: Solve for x
    x = 3,348,938,607.82/56,811.11
  6. Step 6: Final answer
    x = 58,948.66

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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.