Home / 78,136.08-107,827.84-42,326.16

Finding the Fourth Proportional to 78,136.08, 107,827.84 and 42,326.16

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Solution

The fourth proportional to 78,136.08, 107,827.84 and 42,326.16 is: 58,410.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,136.08 : 107,827.84 = 42,326.16 : x
  2. Step 2: Convert to fraction form
    78,136.08/107,827.84 = 42,326.16/x
  3. Step 3: Cross multiply
    78,136.08x = 107,827.84 × 42,326.16
  4. Step 4: Simplify right side
    78,136.08x = 4,563,938,408.29
  5. Step 5: Solve for x
    x = 4,563,938,408.29/78,136.08
  6. Step 6: Final answer
    x = 58,410.13

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1.5x scale

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.