Home / 78,416.79-117,631.55-47,041.23

Finding the Fourth Proportional to 78,416.79, 117,631.55 and 47,041.23

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Solution

The fourth proportional to 78,416.79, 117,631.55 and 47,041.23 is: 70,565.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,416.79 : 117,631.55 = 47,041.23 : x
  2. Step 2: Convert to fraction form
    78,416.79/117,631.55 = 47,041.23/x
  3. Step 3: Cross multiply
    78,416.79x = 117,631.55 × 47,041.23
  4. Step 4: Simplify right side
    78,416.79x = 5,533,532,798.81
  5. Step 5: Solve for x
    x = 5,533,532,798.81/78,416.79
  6. Step 6: Final answer
    x = 70,565.66

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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.