Home / 78,986,448.94-118,484,871.93-20,695,554.22

Finding the Fourth Proportional to 78,986,448.94, 118,484,871.93 and 20,695,554.22

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Solution

The fourth proportional to 78,986,448.94, 118,484,871.93 and 20,695,554.22 is: 31,044,693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,986,448.94 : 118,484,871.93 = 20,695,554.22 : x
  2. Step 2: Convert to fraction form
    78,986,448.94/118,484,871.93 = 20,695,554.22/x
  3. Step 3: Cross multiply
    78,986,448.94x = 118,484,871.93 × 20,695,554.22
  4. Step 4: Simplify right side
    78,986,448.94x = 2,452,110,091,277,071
  5. Step 5: Solve for x
    x = 2,452,110,091,277,071/78,986,448.94
  6. Step 6: Final answer
    x = 31,044,693.41

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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.