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Finding the Fourth Proportional to 70,117.08, 105,112.98 and 30,642.93

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Solution

The fourth proportional to 70,117.08, 105,112.98 and 30,642.93 is: 45,937.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,117.08 : 105,112.98 = 30,642.93 : x
  2. Step 2: Convert to fraction form
    70,117.08/105,112.98 = 30,642.93/x
  3. Step 3: Cross multiply
    70,117.08x = 105,112.98 × 30,642.93
  4. Step 4: Simplify right side
    70,117.08x = 3,220,969,688.23
  5. Step 5: Solve for x
    x = 3,220,969,688.23/70,117.08
  6. Step 6: Final answer
    x = 45,937.02

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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.