Home / 84,778.40-117,004.56-47,064.80

Finding the Fourth Proportional to 84,778.40, 117,004.56 and 47,064.80

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Solution

The fourth proportional to 84,778.40, 117,004.56 and 47,064.80 is: 64,955.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,778.40 : 117,004.56 = 47,064.80 : x
  2. Step 2: Convert to fraction form
    84,778.40/117,004.56 = 47,064.80/x
  3. Step 3: Cross multiply
    84,778.40x = 117,004.56 × 47,064.80
  4. Step 4: Simplify right side
    84,778.40x = 5,506,796,215.49
  5. Step 5: Solve for x
    x = 5,506,796,215.49/84,778.40
  6. Step 6: Final answer
    x = 64,955.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.