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Finding the Fourth Proportional to 70,418.17, 105,486.55 and 42,323.05

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Solution

The fourth proportional to 70,418.17, 105,486.55 and 42,323.05 is: 63,400.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,418.17 : 105,486.55 = 42,323.05 : x
  2. Step 2: Convert to fraction form
    70,418.17/105,486.55 = 42,323.05/x
  3. Step 3: Cross multiply
    70,418.17x = 105,486.55 × 42,323.05
  4. Step 4: Simplify right side
    70,418.17x = 4,464,512,160.45
  5. Step 5: Solve for x
    x = 4,464,512,160.45/70,418.17
  6. Step 6: Final answer
    x = 63,400.00

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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.