Home / 78,684.81-108,583.64-42,875.13

Finding the Fourth Proportional to 78,684.81, 108,583.64 and 42,875.13

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Solution

The fourth proportional to 78,684.81, 108,583.64 and 42,875.13 is: 59,166.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,684.81 : 108,583.64 = 42,875.13 : x
  2. Step 2: Convert to fraction form
    78,684.81/108,583.64 = 42,875.13/x
  3. Step 3: Cross multiply
    78,684.81x = 108,583.64 × 42,875.13
  4. Step 4: Simplify right side
    78,684.81x = 4,655,537,466.50
  5. Step 5: Solve for x
    x = 4,655,537,466.50/78,684.81
  6. Step 6: Final answer
    x = 59,166.92

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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.