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Finding the Fourth Proportional to 84,011.93, 115,898.81 and 56,779.32

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Solution

The fourth proportional to 84,011.93, 115,898.81 and 56,779.32 is: 78,330.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,011.93 : 115,898.81 = 56,779.32 : x
  2. Step 2: Convert to fraction form
    84,011.93/115,898.81 = 56,779.32/x
  3. Step 3: Cross multiply
    84,011.93x = 115,898.81 × 56,779.32
  4. Step 4: Simplify right side
    84,011.93x = 6,580,655,336.71
  5. Step 5: Solve for x
    x = 6,580,655,336.71/84,011.93
  6. Step 6: Final answer
    x = 78,330.01

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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.