Home / 78,386.18-108,173.26-42,576.80

Finding the Fourth Proportional to 78,386.18, 108,173.26 and 42,576.80

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Solution

The fourth proportional to 78,386.18, 108,173.26 and 42,576.80 is: 58,756.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,386.18 : 108,173.26 = 42,576.80 : x
  2. Step 2: Convert to fraction form
    78,386.18/108,173.26 = 42,576.80/x
  3. Step 3: Cross multiply
    78,386.18x = 108,173.26 × 42,576.80
  4. Step 4: Simplify right side
    78,386.18x = 4,605,671,256.37
  5. Step 5: Solve for x
    x = 4,605,671,256.37/78,386.18
  6. Step 6: Final answer
    x = 58,756.16

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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.