Home / 78,725,933.99-118,080,928-21,224,017.79

Finding the Fourth Proportional to 78,725,933.99, 118,080,928 and 21,224,017.79

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Solution

The fourth proportional to 78,725,933.99, 118,080,928 and 21,224,017.79 is: 31,833,877.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,933.99 : 118,080,928 = 21,224,017.79 : x
  2. Step 2: Convert to fraction form
    78,725,933.99/118,080,928 = 21,224,017.79/x
  3. Step 3: Cross multiply
    78,725,933.99x = 118,080,928 × 21,224,017.79
  4. Step 4: Simplify right side
    78,725,933.99x = 2,506,151,716,531,709
  5. Step 5: Solve for x
    x = 2,506,151,716,531,709/78,725,933.99
  6. Step 6: Final answer
    x = 31,833,877.22

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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.