Home / 76,410.09-105,446.29-47,746.40

Finding the Fourth Proportional to 76,410.09, 105,446.29 and 47,746.40

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Solution

The fourth proportional to 76,410.09, 105,446.29 and 47,746.40 is: 65,890.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,410.09 : 105,446.29 = 47,746.40 : x
  2. Step 2: Convert to fraction form
    76,410.09/105,446.29 = 47,746.40/x
  3. Step 3: Cross multiply
    76,410.09x = 105,446.29 × 47,746.40
  4. Step 4: Simplify right side
    76,410.09x = 5,034,680,345.35
  5. Step 5: Solve for x
    x = 5,034,680,345.35/76,410.09
  6. Step 6: Final answer
    x = 65,890.26

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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.