Home / 78,013.08-117,019.44-31,298.76

Finding the Fourth Proportional to 78,013.08, 117,019.44 and 31,298.76

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Solution

The fourth proportional to 78,013.08, 117,019.44 and 31,298.76 is: 46,948.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,013.08 : 117,019.44 = 31,298.76 : x
  2. Step 2: Convert to fraction form
    78,013.08/117,019.44 = 31,298.76/x
  3. Step 3: Cross multiply
    78,013.08x = 117,019.44 × 31,298.76
  4. Step 4: Simplify right side
    78,013.08x = 3,662,563,367.89
  5. Step 5: Solve for x
    x = 3,662,563,367.89/78,013.08
  6. Step 6: Final answer
    x = 46,948.07

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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.