Home / 77,613.84-116,421.48-30,878.64

Finding the Fourth Proportional to 77,613.84, 116,421.48 and 30,878.64

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Solution

The fourth proportional to 77,613.84, 116,421.48 and 30,878.64 is: 46,318.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,613.84 : 116,421.48 = 30,878.64 : x
  2. Step 2: Convert to fraction form
    77,613.84/116,421.48 = 30,878.64/x
  3. Step 3: Cross multiply
    77,613.84x = 116,421.48 × 30,878.64
  4. Step 4: Simplify right side
    77,613.84x = 3,594,936,969.19
  5. Step 5: Solve for x
    x = 3,594,936,969.19/77,613.84
  6. Step 6: Final answer
    x = 46,318.25

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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.