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Finding the Fourth Proportional to 101,784.76, 140,429.35 and 61,483.21

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Solution

The fourth proportional to 101,784.76, 140,429.35 and 61,483.21 is: 84,826.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,784.76 : 140,429.35 = 61,483.21 : x
  2. Step 2: Convert to fraction form
    101,784.76/140,429.35 = 61,483.21/x
  3. Step 3: Cross multiply
    101,784.76x = 140,429.35 × 61,483.21
  4. Step 4: Simplify right side
    101,784.76x = 8,634,047,216.21
  5. Step 5: Solve for x
    x = 8,634,047,216.21/101,784.76
  6. Step 6: Final answer
    x = 84,826.52

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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.