Home / 78,544.40-117,816.60-70,015.10

Finding the Fourth Proportional to 78,544.40, 117,816.60 and 70,015.10

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Solution

The fourth proportional to 78,544.40, 117,816.60 and 70,015.10 is: 105,022.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,544.40 : 117,816.60 = 70,015.10 : x
  2. Step 2: Convert to fraction form
    78,544.40/117,816.60 = 70,015.10/x
  3. Step 3: Cross multiply
    78,544.40x = 117,816.60 × 70,015.10
  4. Step 4: Simplify right side
    78,544.40x = 8,248,941,030.66
  5. Step 5: Solve for x
    x = 8,248,941,030.66/78,544.40
  6. Step 6: Final answer
    x = 105,022.65

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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.