Home / 78,237.79-117,378.55-25,684.18

Finding the Fourth Proportional to 78,237.79, 117,378.55 and 25,684.18

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Solution

The fourth proportional to 78,237.79, 117,378.55 and 25,684.18 is: 38,533.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,237.79 : 117,378.55 = 25,684.18 : x
  2. Step 2: Convert to fraction form
    78,237.79/117,378.55 = 25,684.18/x
  3. Step 3: Cross multiply
    78,237.79x = 117,378.55 × 25,684.18
  4. Step 4: Simplify right side
    78,237.79x = 3,014,771,806.34
  5. Step 5: Solve for x
    x = 3,014,771,806.34/78,237.79
  6. Step 6: Final answer
    x = 38,533.45

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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.