Home / 92,828.16-128,103-50,386.70

Finding the Fourth Proportional to 92,828.16, 128,103 and 50,386.70

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Solution

The fourth proportional to 92,828.16, 128,103 and 50,386.70 is: 69,533.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,828.16 : 128,103 = 50,386.70 : x
  2. Step 2: Convert to fraction form
    92,828.16/128,103 = 50,386.70/x
  3. Step 3: Cross multiply
    92,828.16x = 128,103 × 50,386.70
  4. Step 4: Simplify right side
    92,828.16x = 6,454,687,430.10
  5. Step 5: Solve for x
    x = 6,454,687,430.10/92,828.16
  6. Step 6: Final answer
    x = 69,533.72

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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.