Home / 78,700.03-108,602.87-42,889.26

Finding the Fourth Proportional to 78,700.03, 108,602.87 and 42,889.26

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Solution

The fourth proportional to 78,700.03, 108,602.87 and 42,889.26 is: 59,185.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,700.03 : 108,602.87 = 42,889.26 : x
  2. Step 2: Convert to fraction form
    78,700.03/108,602.87 = 42,889.26/x
  3. Step 3: Cross multiply
    78,700.03x = 108,602.87 × 42,889.26
  4. Step 4: Simplify right side
    78,700.03x = 4,657,896,728.18
  5. Step 5: Solve for x
    x = 4,657,896,728.18/78,700.03
  6. Step 6: Final answer
    x = 59,185.45

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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.