Home / 78,219.02-117,328.30-28,298.92

Finding the Fourth Proportional to 78,219.02, 117,328.30 and 28,298.92

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Solution

The fourth proportional to 78,219.02, 117,328.30 and 28,298.92 is: 42,448.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,219.02 : 117,328.30 = 28,298.92 : x
  2. Step 2: Convert to fraction form
    78,219.02/117,328.30 = 28,298.92/x
  3. Step 3: Cross multiply
    78,219.02x = 117,328.30 × 28,298.92
  4. Step 4: Simplify right side
    78,219.02x = 3,320,264,031.36
  5. Step 5: Solve for x
    x = 3,320,264,031.36/78,219.02
  6. Step 6: Final answer
    x = 42,448.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.