Home / 78,727,421.86-118,077,673.63-21,206,240.94

Finding the Fourth Proportional to 78,727,421.86, 118,077,673.63 and 21,206,240.94

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Solution

The fourth proportional to 78,727,421.86, 118,077,673.63 and 21,206,240.94 is: 31,805,736.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,727,421.86 : 118,077,673.63 = 21,206,240.94 : x
  2. Step 2: Convert to fraction form
    78,727,421.86/118,077,673.63 = 21,206,240.94/x
  3. Step 3: Cross multiply
    78,727,421.86x = 118,077,673.63 × 21,206,240.94
  4. Step 4: Simplify right side
    78,727,421.86x = 2,503,983,595,989,060
  5. Step 5: Solve for x
    x = 2,503,983,595,989,060/78,727,421.86
  6. Step 6: Final answer
    x = 31,805,736.00

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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.