Home / 70,342.02-105,471.32-28,242.07

Finding the Fourth Proportional to 70,342.02, 105,471.32 and 28,242.07

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Solution

The fourth proportional to 70,342.02, 105,471.32 and 28,242.07 is: 42,346.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,342.02 : 105,471.32 = 28,242.07 : x
  2. Step 2: Convert to fraction form
    70,342.02/105,471.32 = 28,242.07/x
  3. Step 3: Cross multiply
    70,342.02x = 105,471.32 × 28,242.07
  4. Step 4: Simplify right side
    70,342.02x = 2,978,727,997.54
  5. Step 5: Solve for x
    x = 2,978,727,997.54/70,342.02
  6. Step 6: Final answer
    x = 42,346.35

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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.